Researchers traced the evolution of minerals (“salts”) in an ancient brine, as recorded in samples from the asteroid Bennu, returned to Earth by NASA’s OSIRIS-REx mission. The results support the idea that asteroids like Bennu may have delivered water and essential chemical building blocks of life to Earth in the distant past. Read more »
ALS Work Using Microscopy/Imaging
These techniques use the light-source beam to obtain pictures with fine spatial resolution of the samples under study and are used in diverse research areas such as cell biology, lithography, infrared microscopy, radiology, and x-ray tomography.
Berkeley Lab Helps Explore Mysteries of Asteroid Bennu
The Advanced Light Source and Molecular Foundry provided powerful tools to study asteroid samples returned by NASA’s OSIRIS-REx mission to the asteroid Bennu. Researchers found a telltale set of salts formed by evaporation that illuminate Bennu’s watery past. Read more »
Native American Interns Explore Engineering Opportunities at the Lab
This last summer, Berkeley Lab hosted three students from Navajo Technical University in a DOE-funded initiative that partners national labs with learning institutions whose populations are historically underrepresented in science. The goal is to increase enrollment of Native American students in Navajo Tech engineering programs. Read more »
Magnetization Switching in Highly Magnetostrictive Microstructures
Researchers learned how the size, shape, and orientation of microstructures affect how they switch magnetization directions in response to an applied voltage. The work advances our understanding of strain-responsive composite materials for use in energy-efficient electronic applications such as memory devices, sensors, and actuators. Read more »
The Spatial Dynamics of Bone Remodeling During Lactation
To mobilize the minerals needed for milk production, osteocytes—the cells responsible for maintaining bone quality—facilitate the release of calcium and other minerals from the bone matrix surrounding them. In this study, researchers investigated how osteocytes balance the rapid release of calcium with maintaining bone integrity. Read more »
Elucidating Heterogeneous Li Insertion Using Single-Crystalline and Freestanding Layered Oxide Thin Film
The nanoscale surface insertion of lithium in a single-crystalline and freestanding LiNi1/3Mn1/3Co1/3O2 thin film is elucidated using in situ scanning transmission x-ray microscopy. The realization of advanced analysis through freestanding thin films is expected to be applicable to other systems subjected to external stimuli, such as hydrogen storage alloys, in the field of materials science. Read more »
Electron microscopy observations of the diversity of Ryugu organic matter and its relationship to minerals at the micro- to nano-scale
The work reported here addresses the question of how the organic matter (OM) in the Hayabusa2 samples compares and contrasts with OM from primitive carbonaceous chondrites, as observed primarily by transmission electron microscopy in concert with other microanalytical techniques. Read more »
Chemical Insights into the Molecular Composition of Organic Aerosols in the Urban Region of Houston, Texas
This study illustrates the molecular composition of organic aerosols collected in the Houston, Texas, region using direct sampling interfaced with high-resolution mass spectrometry. This study highlights the episodic prevalence and day/nighttime distribution of organosulfates and organonitrates enriched species. Read more »
Direct Observation of Room-Temperature Magnetic Skyrmion Motion Driven by Ultra-Low Current Density in Van Der Waals Ferromagnets
Researchers demonstrate current-driven magnetic skyrmion motion in van der Waals ferromagnets at room temperature. The skyrmion motion presents ultra-low critical current density to activate their dynamics, thanks to minimized defects in the van der Waals gap. The findings will provide a new platform for spintronics application in the future. Read more »
Surprise Mineral Precursor Found in Coral Skeletons and Mollusk Shells
Researchers studied samples from corals, mollusks, and sea urchins, at edges where mineral precursors start to form the new shell or skeleton. There, they found a surprise: corals and mollusks produced a mineral precursor that had never been observed before in living organisms or rocks, and had only recently been created synthetically. Read more »
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